DR. MARC SIEGEL, JENNIFER JOHNSON: Meet the angel doctors fighting hantavirus

Dr. David Brett-Major, an infectious disease doctor and professor of epidemiology at the University of Nebraska Medical Center is a medical hero. He is a world renowned expert on quarantine and isolation of patients exposed to high risk pathogens including Ebola in "resource limited settings with smart, creative, resourceful colleagues."  He has worked extensively in sub-Saharan Africa, and now, he is a major part of the U.S. State Department organized team that brings eighteen passengers back...